1008747749 has 2 divisors, whose sum is σ = 1008747750. Its totient is φ = 1008747748.

The previous prime is 1008747739. The next prime is 1008747787. The reversal of 1008747749 is 9477478001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 814702849 + 194044900 = 28543^2 + 13930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1008747749 is a prime.

It is a super-2 number, since 2×1008747749² = 2035144042225134002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1008747739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504373874 + 504373875.

It is an arithmetic number, because the mean of its divisors is an integer number (504373875).

Almost surely, 2^1008747749 is an apocalyptic number.

It is an amenable number.

1008747749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1008747749 is an equidigital number, since it uses as much as digits as its factorization.

1008747749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 1008747749 is about 31760.7894895577. The cubic root of 1008747749 is about 1002.9074548471.

The spelling of 1008747749 in words is "one billion, eight million, seven hundred forty-seven thousand, seven hundred forty-nine".